Defender Security DFR-MN-2804K User manual

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28” 4K CCTV LED MONITOR
MODEL: DFR-MN-2804K

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IMPORTANT SAFETY INFORMATION
Please read these instructions carefully before use and retain for future reference.
• When using electrical appliances basic safety precautions should always be
followed.
• Check that the voltage indicated on the PSU rating plate corresponds with that of
the local network before connecting the appliance to the mains power supply.
• Only use the supplied PSU or one of identical specication.
• The power supply must be connected to a grounded mains supply.
• There are no user serviceable parts in this appliance. Refer all servicing to
qualied personnel.
• Do not operate the unit if you detect smoke or a strange smell coming from the
unit.
• If the screen is cracked or damaged the monitor must be considered scrap and
disposed of under local WEEE regulations.
• Install the appliance on a stable and level surface. Avoid any unstable locations in
order to avoid damage to property or personal damage.
• This monitor is for indoor use only.
• Do not install above a heat source or close to heat generating devices.
• Do not cover or in any way block the ventilation slots.
• Ensure there is ample space surrounding the monitor in order to allow ventilation
and avoid overheating.
• If the monitor is not in use for a long period of time, switch the power off and
unplug the power supply.
• Before cleaning, switch off the power and unplug the power supply.
• When cleaning, use a soft lint-free dry cloth to remove any dust that may have
accumulated.
• Do not use any chemicals, abrasives or solvents that could damage the unit.
OPTIONAL WALL MOUNTING
WHAT’s INCLUDED
• AC Mains cable
• Power Supply Unit
• Monitor
• User Manual
Caution: The wall mount must be capable of supporting the monitor’s net weight.
• To mount your monitor to the wall you need to purchase a suitable VESA wall
mount for the size and weight of the monitor with 100 x 100mm M4 x 8mm screws.
• Place the monitor face down on a protective cloth and attach the wall mount to the
matching captive nuts in the rear of the monitor casing.
• Remove the four screws from each side of the mounting stand and remove the
stand.
• It is advisable to connect all required cables to the monitor before nalising the
mounting to the wall as access to the connection sockets is less restricted.

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CONNECTIONS
OPERATION
• DC: input from the power supply 12V 4A
• HDMI (1/2/3): Lets you connect a device, such as a DVR with an HDMI or a DVI
output.
• HDMI (High Denition Multimedia Interface) provides an uncompressed digital
connection that carries both video and audio data in one cable.
• Since HDMI technology is based on Digital Visual Interface (DVI), the jack on the
back of your monitor is also compatible with DVI devices when connected using a
DVI to HDMI cable.
• DP: Connect a source device with a DP video output eg. notebook computer
• AUDIO OUT: used to connect external 3.5mm headphones or active speakers.
• You can use the side panel buttons in the lower right part of your monitor to
operate many of the monitor’s features or use the remote control.
• : Turns on / off the monitor
• SOURCE: accesses the available video input signals (DP/HDMI 1/2/3)
• +: Increases the brightness directly.
• - : Enters the picture mode setting directly.
• MENU: Displays the OSD main menu.
• In the main menu, use’+’ or ‘-’ button to highlight the required option, then press
‘MENU’ to select then ‘+’ or ‘-’ to adjust the chosen setting.
• Press ‘SOURCE’ to return to the previous menu and press again to exit the menu.
• LED Indicator: Red when standby mode, and green when display in use.

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ON SCREEN MENUS
Input Source:
The monitor will automatically display the channel that is currently inputting a signal
Brightness/Contrast:
Brightness. Set the image brightness (0-100)
Contrast. Set the image contrast (0-100)
DCR. Set the dynamic contrast ratio (on / off)

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Colour Set:
Gamma: Set the image gamma (1.8, 2.0, 2.2, 2.4, 2.6)
Picture Mode: Set the image mode (Standard, photo, movie, game)
Colour Temperature: Set the colour temperature (Normal, warm, cool, user)
Hue: Set the image hue (0-100)
Saturation: Set the image saturation (0-100)
Low Blue Light: Set low blue light (0-100)
Picture Quality Set:
Sharpness: Set the picture sharpness (0-100)
Response Time: Set the picture response time (off, high, middle, low)
Noise Reduction: Set the picture noise reduction (off, high, middle, low)
Super Resolution: Set the picture super resolution (off, high, middle, low)
Dynamic Luminous Control: Set the picture dynamic luminous (on off)

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Display:
Aspect Ratio: Screen aspect ratio (wide screen, 4:3, 1:1, auto)
Audio:
Mute: Mute the audio output to the earphone ( on / off)
Volume: Set the audio output volume to the earphone (0-100)

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OSD:
Language: OSD language selection
OSD H-Position: Change OSD horizontal position adjustment (0-100)
OSD V-Position: Change OSD vertical position adjustment (0-100)
OSD Transparency: OSD transparency adjustment (0-100)
OSD Time Out: OSD display dwell time selection (0-100 seconds)
Multi-Window:
Multi-Window: Set the screen multi-window (off, PIP mode, PBP 2win, PBP 3Win, PBP
4Win)
Sub Win2 Input: Set the sub win2 input HDMI 2
Sub Win3 Input: Set the sub win3 input HDMI 3
Sub Win4 Input: Set the sub win4 DP
PIP Size: Set the PIP picture size (small, medium, large)
PIP Position: Set the PIP sub window position (top right, top left, bottom right, bottom
left)
Swap: Switch the main window with the sub window

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Made in China. PR2 9PP
INFORMATION ON WASTE DISPOSAL FOR CONSUMERS OF
ELECTRICAL & ELECTRONIC EQUIPMENT.
When this product has reached the end of its life it must be treated as Waste Electrical & Electronic
Equipment (WEEE). Any WEEE marked products must not be mixed with general household waste,
but kept separate for the treatment, recovery and recycling of the materials used. Contact your local
authority for details of recycling schemes in your area.
SPECIFICATION
Model DFR-MN-2804K
Screen Size/Aspect ratios 28” LED/16:9/4:3
Resolution 3840 x 2160 @ 60Hz
Pixel Pitch 0.158 x 0.158mm
Response Time 5 ms
Brightness/Contrast ratio 300cd/m2/1000:1
Viewing angle 178o/178o
HDMI 1 Version 2.0
HDMI 2 Version 1.4
HDMI 3 Version 1.4
DisplayPort Version 1.2
VESA Mounting 100 x 100mm
Power 12V DC 4A
PSU 220-240V AC 50Hz <35W
Operating environment 0-40oC@5-90%humidity
Weight 8.5kg
Man Rev 1.0
Other:
Reset: Reset the monitor to default factory setting.